GB2003681B - Gain and impedance switching circuits for amplifiers - Google Patents

Gain and impedance switching circuits for amplifiers

Info

Publication number: GB2003681B
Authority: GB; United Kingdom
Prior art keywords: amplifiers; gain; switching circuits; impedance switching; impedance
Prior art date: 1977-08-29
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

GB7834890A

Other versions

GB2003681A (en

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Sony Corp

Original Assignee

Sony Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1977-08-29

Filing date

1978-08-29

Publication date

1982-04-15

1978-08-29 Application filed by Sony Corp filed Critical Sony Corp

1979-03-14 Publication of GB2003681A publication Critical patent/GB2003681A/en

1982-04-15 Application granted granted Critical

1982-04-15 Publication of GB2003681B publication Critical patent/GB2003681B/en

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/14—Containers, e.g. vats
- D06B23/16—Containers, e.g. vats with means for introducing or removing textile materials without modifying container pressure
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Chemical & Material Sciences (AREA)
Materials Engineering (AREA)
Power Engineering (AREA)
Amplifiers (AREA)
Control Of Amplification And Gain Control (AREA)

GB7834890A 1977-08-29 1978-08-29 Gain and impedance switching circuits for amplifiers Expired GB2003681B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP1977115397U JPS5758807Y2 (en)	1977-08-29	1977-08-29

Publications (2)

Publication Number	Publication Date
GB2003681A GB2003681A (en)	1979-03-14
GB2003681B true GB2003681B (en)	1982-04-15

Family

ID=14661541

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7834890A Expired GB2003681B (en)	1977-08-29	1978-08-29	Gain and impedance switching circuits for amplifiers

Country Status (8)

Country	Link
US (1)	US4210873A (en)
JP (1)	JPS5758807Y2 (en)
AU (1)	AU523801B2 (en)
CA (1)	CA1104220A (en)
DE (1)	DE2837671A1 (en)
FR (1)	FR2402344A1 (en)
GB (1)	GB2003681B (en)
NL (1)	NL7808861A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4323798A (en) *	1980-04-18	1982-04-06	The United States Of America As Represented By The Secretary Of The Air Force	Fast operating switchable operational amplifier driven circuits
JPS59140512U (en) *	1983-03-10	1984-09-19	オンキヨー株式会社	equalizer amplifier
JPS60167415U (en) *	1984-04-12	1985-11-07	横河電機株式会社	feedback amplifier circuit
JPH0227644U (en) *	1988-08-10	1990-02-22
US6104246A (en) *	1999-05-25	2000-08-15	International Business Machines Corporation	Variable gain RF amplifier with switchable bias injection and feedback
US7656939B2 (en) *	2004-10-25	2010-02-02	Kawasaki Microelectronics America, Inc.	Adaptive equalizer with passive and active stages

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1130000B (en) *	1960-10-25	1962-05-24	Licentia Gmbh	Amplifier with switchable gain factor
US3629720A (en) *	1970-03-12	1971-12-21	Canadian Patents Dev	Digitally controlled variable-gain linear dc amplifier
DE2116076B2 (en) *	1971-04-02	1974-01-10	Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen	Amplifier with variable gain
DE2332211C3 (en) *	1973-06-25	1978-12-14	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Device for evaluating electrical signals
US3940709A (en) *	1974-12-19	1976-02-24	Ampex Corporation	Equalization circuit

1977
- 1977-08-29 JP JP1977115397U patent/JPS5758807Y2/ja not_active Expired
1978
- 1978-08-22 CA CA309,836A patent/CA1104220A/en not_active Expired
- 1978-08-23 US US05/936,103 patent/US4210873A/en not_active Expired - Lifetime
- 1978-08-28 AU AU39320/78A patent/AU523801B2/en not_active Expired
- 1978-08-28 NL NL7808861A patent/NL7808861A/en not_active Application Discontinuation
- 1978-08-29 GB GB7834890A patent/GB2003681B/en not_active Expired
- 1978-08-29 DE DE19782837671 patent/DE2837671A1/en not_active Ceased
- 1978-08-29 FR FR7824943A patent/FR2402344A1/en active Granted

Also Published As

Publication number	Publication date
JPS5758807Y2 (en)	1982-12-16
AU3932078A (en)	1980-03-06
US4210873A (en)	1980-07-01
JPS5442450U (en)	1979-03-22
NL7808861A (en)	1979-03-02
GB2003681A (en)	1979-03-14
CA1104220A (en)	1981-06-30
DE2837671A1 (en)	1979-03-15
FR2402344A1 (en)	1979-03-30
AU523801B2 (en)	1982-08-19
FR2402344B1 (en)	1983-04-29

Legal Events

Date	Code	Title	Description
1995-04-26	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19940829

Publication	Publication Date	Title
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JPS53126846A (en)	1978-11-06	Cascode amplifying circuit